In this topic, we will create a simple VB.NET program.

VB.NET describes the following structure to create a program:

Namespace announcement

Word space is a way to separate one display from another. You can walk happily in life without having to worry about explicitly announcing word spaces in your VB.Net code because of VB. Automatic namespace creation for Net. Thus, one can create, name, rename any project and begin to write code.

There are various processes.

A process can be defined using several versions by the method of overloading it. The name used is same but there are different parameters for every version. The purpose of overloading is to describe certain types of related processes without separating them into words.

Describe a category or module

The major difference among the modules and classes is that the classes have been categorized as objects while the standard modules cannot be categorized as object. In contrast, item data exists separately for each inserted item. Classes are also able for creating interactive modes. This is also a difference from the standard modules.

Variable

Variation is nothing other than the name given to the storage space that our programs can use. Each variation on VB.Net has a specific type, which determines the size and order of the variable memory; the extent of the numbers that can be kept within that memory; and a flexible working set of variables.

The Main Process

Every Visual Basic application must have a process called Main. This process serves as the starting point and complete control of your app. The main process is called by the .NET framework if the application is loaded and prepared for managing.

Statement and disclosure

The statement is a complete guide to Visual Basic programs. The statement could contain the Keywords, Operators, Variables, Actual Values, Ratings and Expressions. Declaration statements - these are statements in which you specify a variable, continuous, or process, and may specify the type of data.

Comments

The only way to make multi-line comments on VB. NET to make multiple ideas for one line;) Indeed, the only option you have is one (') mark in front of the line. You can use Ctrl + K, Ctrl + C and Ctrl + K, Ctrl + U to mark or disable selected text lines.

Let’s create a simple program.

HELLO, WORLD! Program

Imports System
Module Module1
    'Prints Hello, World!
    Sub Main()
        Console.WriteLine("Hello World!")
        Console.ReadKey()
    End Sub

End Module

The following result is produced after compiling and applying the code provided above-

Output

Hello, World!

We will now understand the basic structure of the VB.NET system:

In the VB.NET system, the very first line of the program is the "Import System". In this, the Import is a statement that acquires the position of the space name. The system is a word space that contains basic classes, types of reference data, events, attributes, and various built-in functions that help to make the system work.

The next line determines the Module. It describes the VB.NET file name. As we know, VB.NET language is a fully targeted language, so the whole program must contain a module or section where you can write your own program containing data and processes within the module.

You can describe more than one process in sections and modules. Usually, the process contains a portable code to be used. The process may contain the following function:

Function
Operator
Sub
Get
Set
Add Handler
Remove Handler

All programs must contain Main () method. In VB.NET, the Main () method or process represents the first place for creating any program. We have observed that the C language also has an entry point as the main function ().
The symbol (') is a symbol used for commenting on a line ignored by the compiler in the system, and it is a good practice to use ideas to better understand the system.
Console.WriteLine () is a console category method. This method prints any text or messages present in the app. The Console.ReadKey() helps in reading a single letter from the keyboard back to Visual Studio IDE.

Develop a program in VB.NET with the help of Windows Form.

For developing a Window-based project in the Visual Studio, go through these steps provided below:

Step 1. Start Visual Studio IDE.

Step 2. For developing a project, click on file -> select-> new-> Project

Step 3: Select the Windows Forms App (.NET Framework) and press the Next button.

Step 4: Fill project name and project file location with the help of the Browse button in Location.

Step 5: Click on the Create button. The next window appears on the screen.

Step 6: Now double-click the center area of ??the Form 1.vb (Design) file.

Step 7: Save the file as Form1.vb.

Step 8: For compiling and using a Form1.vb file, press the F5 button or the start button in Visual Studio.

VB.NET Hello World Program